The copolymer of N-(2-hydroxypropyl)methacrylamide and N-[N-(N-methacryloylglycyl)glycyl]hexane- 1,6-diamine (17.6 mole %) was prepared as a model compound for investigation of the mechanism of enzymatically catalyzed generation of electronically excited states in proteins. The amino end groups of the copolymer side chains were transformed into a Schiff base by reaction with glycolaldehyde. The modified copolymer was characterized by its ultraviolet, visible and fluorescence spectra. The enzymatically catalyzed oxidation of the modified copolymer was carried out in a phosphate buffer at pH 7 using horseradish peroxidase as the enzyme. The generation of electronically excited states was demonstrated by chemiluminescence measurement and by a spectroscopic procedure based on transfer of the excitation energy to bilirubin.
N-(2-羟丙基)甲基丙烯酰胺和N-[N-(N-甲基丙烯酰基甘氨酰)甘氨酰]己烷-1,6-二胺(17.6摩尔%)的共聚物被制备为研究酶催化蛋白质中电子激发态生成机制的模型化合物。 共聚物侧链的氨基末端通过与甘醛反应转化为席夫碱。 经过改性的共聚物通过其紫外、可见和荧光光谱进行表征。 在pH 7的磷酸盐缓冲液中,使用辣根过氧化物酶作为酶,对改性共聚物进行酶催化氧化。 通过化学发光测量和基于将激发能量转移到胆红素的光谱程序,证明了电子激发态的生成。